Product details:

Help strengthen your lungs Help clear mucus and strengthen lung capacity with Air Physio. It uses a natural process called Oscillating Positive Expiratory Pressure (OPEP) that creates positive pressure in your lungs to loosen mucus and help increase lung capacity. The more you use it, the stronger and healthier your lungs will become! Easy to use - just blow into it and keep the stainless-steel ball in the air for as long as you can.Purported to open airways & increase lung capacity, this is a handy lung device!
It's suitable for easing the symptoms of a variety of respiratory conditions.
The device helps to clear away mucus in the airways until it can be coughed out.
Works by exhaling into the device & moving a steel ball to create positive pressure!
Use for as little as 5-10 minutes a day for twice a day to combat symptoms.